Honestly, my first thought was simply... get out of the way of the attack. It's such a simple thought, one of my favorite's about the art. If you can do this consistently, you'll never be hit once. Really, what could possibly be better?

Actual technique-wise, do what works best for you. What you can respond with most effectively with instinct.. thought takes too long. This is different for everyone, and changes depends on the attack and attacker.

Jason Hobbs
"As you walk and eat and travel, be where you are. Otherwise you will miss most of your life."